33 Series Air Filter (33-2181) by K&N®. Get better performance, superior engine protection and more economical operation just by changing your air filter. The K&N air filter gives you increased airflow without sacrificing filtration ability. It's the last air filter you'll ever buy for your car.

Features:

Improves engine airflow

Increases horsepower and acceleration

Superior filtration without reduced airflow

Reduces maintenance costs

Washable and reusable

Get up to 50,000 miles between cleanings under normal driving conditions

Emissions legal in all States

Backed by K&N's Million Mile Limited Warranty

Most air filters on the market are a compromise. Many high-performance filters deliver better airflow, but sacrifice filtering ability and engine protection in the process. OEM filters, which are usually made of paper, filter adequately but at the expense of airflow. And airflow decreases as these air filters become dirty. Not so the K&N air filter. K&N air filters increase airflow without decreasing filtration ability, and the increased airflow remains consistent throughout the filter's service interval. The secret is in the K&N filter's construction.

K&N's initial goal was to develop a filter that would deliver increased airflow during dirty, dusty off-road racing conditions. Increased airflow improves the efficiency of the combustion process, increasing horsepower and torque. But just increasing airflow without ensuring adequate filtration under those conditions would result in a ruined engine. K&N's solution was a filter design consisting of 4 to 6 layers of cotton gauze sandwiched between two aluminum wire screens. The cotton is then treated with a specially formulated grade of oil that causes tackiness throughout the cotton’s microscopic strands. The resulting K&N filter not only delivers increased airflow while trapping dirt particles that could harm your engine, that level of airflow is maintained even as the filter gets dirty. The layers of oiled cotton fibers in the K&N filter trap dirt particles that are smaller than the holes in the filter media. The thickness of the layers also allows the K&N filter to trap dirt and dust on many levels, trapping more dirt without decreasing airflow. Contrast this with a paper filter that only traps dirt on its surface; as the surface area becomes clogged, the airflow rate goes down.

Each K&N air filter is custom designed to fit into your existing factory air box. The K&N filter is economical because it's the last air filter you'll have to buy for your car. It can be washed and reused many times, and since you can usually drive up to 50,000 miles between servicing, you won't have to clean it very often. And every K&N filter is backed by K&N's Million Mile Limited Warranty. By the way, check the CARiD reviews and read what the customers think of K&N porducts.

46.99

Brand: K&N
Part Number:
33-2181
UPC: 024844086020

K&N® is the inventor and leading innovator of reusable cotton gauze filter technology for automotive applications. The first K&N filter was conceived for racing over 40 years ago and a performance enthusiast mindset continues today throughout all levels of the company. K&N is the sales and brand leader for performance filters, including an extensive line of factory replacement filters and performance air intake kits. The company actively promotes the environmental, economical and performance advantages of long-life reusable cotton gauze filters.

Product Reviews (1)

Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.

I purchase these filters on all of my vehicles (past and current). I had lots of gas savings on my Toyota Highlander 2005, about 60 miles per tank more with K&N, but with 2008 model I didn't have any difference. But the ease of going up to speed was better with K&N in it. On the current Mercedes ML350 I felt a good change in acceleration as well, haven't tested MPG yet.

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Vehicle FitmentThis part is compatible with 120 vehicle(s)

Year Make Model Fitment Notes

2014 Mercedes G Class G500 / G550

2013 Mercedes G Class G550

2013 Mercedes S Class S400

2013 Mercedes-Benz G500

2012 Mercedes C Class C300

2012 Mercedes G Class

2012 Mercedes GL Class GL450 / GL550

2012 Mercedes GLK class

2012 Mercedes S Class S400

2012 Mercedes SL Class SL550

2012 Mercedes-Benz GL500

2011 Mercedes C Class 3.0L; C350

2011 Mercedes CL Class CL500 V8

2011 Mercedes CLS Class CLS550

2011 Mercedes E class E550; E350 3.5L

2011 Mercedes G Class G500 / G550

2011 Mercedes GL Class GL450 / GL550

2011 Mercedes GLK class

2011 Mercedes M Class ML550; ML350 3.5L

2011 Mercedes R Class 3.5L

2011 Mercedes S Class S400; S500 V8

2011 Mercedes SL Class SL500 / SL550 V8

2011 Mercedes SLK Class SLK300 / SLK350

2011 Mercedes-Benz GL500

2011 Mercedes-Benz GLK300

2010 Mercedes C Class 3.0L; C350

2010 Mercedes CL Class CL500 / CL550 V8

2010 Mercedes CLS Class CLS550

2010 Mercedes E class E350 / E550

2010 Mercedes G Class G500 / G55 AMG 5.5L

2010 Mercedes GL Class GL450 / GL550

2010 Mercedes GLK class

2010 Mercedes M Class ML550; ML350 3.5L

2010 Mercedes R Class 3.5L

2010 Mercedes S Class S400; S500 / S550 V8

2010 Mercedes SL Class SL500 V8

2010 Mercedes SLK Class 5.5L; SLK300 / SLK350

2010 Mercedes-Benz GL500

2010 Mercedes-Benz GLK300

2009 Mercedes C Class C300 / C350

2009 Mercedes CL Class CL550

2009 Mercedes CLK Class CLK350 / CLK550

2009 Mercedes CLS Class CLS550

2009 Mercedes E class E350 / E550

2009 Mercedes G Class G55 AMG 5.5L

2009 Mercedes GL Class 4.6L / 5.5L

2009 Mercedes M Class ML350 / ML550

2009 Mercedes R Class R350

2009 Mercedes S Class S550

2009 Mercedes SL Class SL550

2009 Mercedes SLK Class 3.0L / 3.5L / 5.5L

2008 Mercedes C Class C230 / C300 / C350

2008 Mercedes CL Class CL550

2008 Mercedes CLK Class CLK350 / CLK550

2008 Mercedes E class E350 / E550

2008 Mercedes G Class 5.5L; G500

2008 Mercedes GL Class 4.6L / 5.5L

2008 Mercedes M Class ML350 / ML550

2008 Mercedes R Class R350

2008 Mercedes S Class S550

2008 Mercedes SL Class SL55 AMG / SL550 V8

2008 Mercedes SLK Class 3.0L / 3.5L / 5.5L

2007 Mercedes C Class C230 / C280 / C350

2007 Mercedes CL Class CL550

2007 Mercedes CLK Class CLK350

2007 Mercedes CLS Class CLS550

2007 Mercedes E class E350 / E550

2007 Mercedes G Class

2007 Mercedes GL Class 4.6L

2007 Mercedes M Class ML350 / ML500

2007 Mercedes R Class R350 / R500

2007 Mercedes S Class S550

2007 Mercedes SL Class SL55 AMG / SL550 5.5L

2007 Mercedes SLK Class 3.0L / 3.5L / 5.5L

2006 Mercedes C Class 2.5L / 3.0L / 3.5L / 5.5L

2006 Mercedes CL Class CL500 / CL55 AMG

2006 Mercedes CLK Class

2006 Mercedes CLS Class 5.0L / 5.5L

2006 Mercedes E class 3.5L / 5.0L / 5.5L

2006 Mercedes G Class

2006 Mercedes M Class

2006 Mercedes R Class

2006 Mercedes S Class S350 / S430 / S500

2006 Mercedes SL Class SL500; SL55 AMG 5.5L

2006 Mercedes SLK Class 3.0L / 3.5L / 5.5L

2005 Mercedes C Class 2.6L / 3.2L / 5.5L

2005 Mercedes CL Class CL500 / CL55 AMG

2005 Mercedes CLK Class

2005 Mercedes E class V6; 5.0L / 5.5L

2005 Mercedes G Class

2005 Mercedes S Class S430 / S500

2005 Mercedes SL Class SL500; SL55 AMG 5.5L

2005 Mercedes SLK Class 3.5L / 5.5L

2004 Mercedes C Class C240 / C320

2004 Mercedes CL Class CL500; CL55 AMG 5.5L

2004 Mercedes CLK Class 3.2L / 5.0L / 5.5L

2004 Mercedes E class 3.2L / 5.0L / 5.5L

2004 Mercedes G Class G500

2004 Mercedes S Class S430 / S500; S55 AMG 5.5L

2004 Mercedes SL Class SL500; SL55 AMG 5.5L

2003 Mercedes C Class C240 / C320

2003 Mercedes CL Class CL500

2003 Mercedes CLK Class 3.2L / 5.0L / 5.5L

2003 Mercedes E class 3.2L / 5.0L / 5.5L

2003 Mercedes G Class G500

2003 Mercedes S Class S430 / S500 / S55 AMG

2003 Mercedes SL Class SL500; SL55 AMG 5.5L

2002 Mercedes C Class C240 / C320

2002 Mercedes CL Class CL500

2002 Mercedes S Class S430 / S500

2002 Mercedes SL Class SL500

2001 Mercedes C Class C240 / C320

2001 Mercedes CL Class CL500

2001 Mercedes S Class S430 / S500

2001 Mercedes SL Class SL500

2000 Mercedes CL Class

2000 Mercedes S Class S430 / S500

2000 Mercedes SL Class SL500

1999 Mercedes CL Class CL500

1999 Mercedes SL Class SL500

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Product Reviews (1)

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